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The frequency distribution below shows the monthly expenditure on gasoline for a sample of 14 individuals Expenditure Frequency 55 - 59 4 60 - 64

The frequency distribution below shows the monthly expenditure on gasoline for a sample of 14 individuals Expenditure Frequency 55 - 59 4 60 - 64 2 65 - 69 7 70 - 74 75 - 79 a. Compute the mean. b. Compute the standard deviation

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